EP0978483A1 - Procédé et appareille pour la purification de l'eau de pluie et7ou mixte - Google Patents

Procédé et appareille pour la purification de l'eau de pluie et7ou mixte Download PDF

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Publication number
EP0978483A1
EP0978483A1 EP99115076A EP99115076A EP0978483A1 EP 0978483 A1 EP0978483 A1 EP 0978483A1 EP 99115076 A EP99115076 A EP 99115076A EP 99115076 A EP99115076 A EP 99115076A EP 0978483 A1 EP0978483 A1 EP 0978483A1
Authority
EP
European Patent Office
Prior art keywords
microfiltration
water
solids
liquid separation
separation stage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99115076A
Other languages
German (de)
English (en)
Inventor
Reinhard Dipl.Ing. Fandrich
Volker Dipl.Ing. Heil
Joachim Dr.Ing. Guderian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0978483A1 publication Critical patent/EP0978483A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/16—Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001—Runoff or storm water

Definitions

  • the invention relates to a method and a corresponding trained device according to the preamble of claim 1, which is capable of both Mixed water, consisting of wastewater and in the normal Sewerage discharged rainwater as well to purify pure rainwater so far that a much of this water is readily natural Waters or derived as surface water can be.
  • the water to be cleaned can be used directly can be taken from a sewer system or as Overflow water from rain overflow basins.
  • a corresponding storage volume of such a rain overflow basin is approx. 20 to 40 m 3 / ha of connected (reduced) area. Dirt load retention is to be achieved in the rain overflow basin.
  • the precipitation-related intermittent loads are particularly from limnological Visible, because the inlet water is a Have oxygen deficiency and clogging of the Gap system on the river bed due to particulate Substances and the entry of persistent, bioaccumulative Substances can have a particularly negative effect (see G. Mehlhart; C. Steltmann; "Precipitation-related Pollution of flowing water "; correspondence Abwasser 41 (1994), volume 11, pages 1994 to 2003).
  • rain overflow basins does not prevent or reduce the introduction of filterable components of the mixed water, such as paper suspended matter, finely divided faecal residues.
  • filterable components have a particularly strong influence on the quality of natural waters.
  • Average overflow concentrations in rain overflow from rain overflow basins are 80 to 180 mg / l chemical oxygen demand (COD), 30 to 60 mg / l biological oxygen demand (BOD) and 165 to 370 mg / l filterable components (AFS) depending on the discharge of effective precipitation.
  • COD chemical oxygen demand
  • BOD biological oxygen demand
  • AFS 165 to 370 mg / l filterable components
  • this object is achieved with the features of claim 1 for the inventive method and the features of claim 9 for a corresponding trained device solved.
  • the procedure or procedure is as follows: that the mixed water the sewer system taken or the rain overflow water from a coarse Solid-liquid separation stage and subsequently one Microfiltration is fed.
  • the so cleaned Water can then be directed into natural waters or are discharged as surface water and the resulting Retentate again via the sewer system in sewage treatment plants be performed where the appropriate cleaning can be carried out.
  • the appropriately pre-cleaned water can then be subsequently of microfiltration, again with an increased Pressure.
  • This pressure should be like this be set that secured in the microfiltration is that a top layer formation is deposited Solids can be prevented.
  • the Formation of a turbulent flow in or before the Microfiltration exploited the formation of the So-called filter cake prevented or severely hampered.
  • a buffer container can be arranged in which sedimentation is also feasible.
  • each water to be treated can be used once of pumps or, depending on local conditions alone or in part using a geodetic Difference in height take place, including this a combination with a pump is conceivable.
  • Such a cross filtration apparatus can consist of several cross-flow microfiltration modules, which are preferably tubular, consist. Several such tubular modules can here in a row or a parallel arrangement be used, according to the required Capacity also a parallel arrangement several such modules arranged in series can be.
  • the contaminated water that is still to be cleaned is removed by the inside of such a tubular one Module, and largely by Water freed from suspended matter can flow radially outwards passed through the jacket designed as a filter and be derived.
  • tubular modules can e.g. from a Wire mesh exist, which is a mesh size has between 1 and 100 microns.
  • the wire mesh can be made of suitable metals, but also consist of resistant plastics.
  • the sewer 7 is using a Pump 1 mixed water contaminated with solids or, in not shown form, rain overflow water in a Solid-liquid separation stage 2 for separation relative coarse components in the water.
  • the one with separated coarse solids laden alb water content is returned to the sewer 7 as a retentate and the pre-cleaned water content comes in this example in the buffer tank 3.
  • An example is a level control in the buffer tank 3 provided that ensures that to be treated Sufficient wastewater, i.e. with sufficient Volume flow, using the pump 4 of microfiltration 5 is supplied. With the pump 4 is so great pressure built up that before the filters of microfiltration 5 a pressure is reached which is a turbulent flow ensures the formation of a Prevent surface layer that can clog the filter.
  • the water also freed from very fine suspended matter can then, as also shown in Figure 1, as pure water in natural waters or as surface water can be derived without significant Damage to the environment has been recorded.
  • the retentate loaded with its particles is removed the microfiltration 5 is discharged and arrives once guided through a bypass line 8 in the circuit again via buffer tank 3, pump 4 for microfiltration 5 and another part of the retirement comes through Line 9, the sewer 7 to not shown Sewage treatment plant.
  • Figure 2 is a schematic representation of a tubular cross-flow microfiltration module shown.
  • the raw water loaded with fine particles from the Solid-liquid separation stage 2 is on one end introduced.
  • the outer surface is made of a filter material 11 formed, as already in general Part of the description mentioned as a wire mesh can be trained. Through this filter material water can be led radially outwards is almost particle-free.
  • the filter material 11 can coated with a water-permeable cover layer 12 his.
  • the retentate containing the solid particles can on the other end face of the tubular microfiltration module via the bypass line in the circuit or be discharged into the sewage system 7.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP99115076A 1998-08-05 1999-08-05 Procédé et appareille pour la purification de l'eau de pluie et7ou mixte Withdrawn EP0978483A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998135458 DE19835458A1 (de) 1998-08-05 1998-08-05 Verfahren und Vorrichtung zur Reinigung von Regen- und/oder Mischwasser
DE19835458 1998-08-05

Publications (1)

Publication Number Publication Date
EP0978483A1 true EP0978483A1 (fr) 2000-02-09

Family

ID=7876598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115076A Withdrawn EP0978483A1 (fr) 1998-08-05 1999-08-05 Procédé et appareille pour la purification de l'eau de pluie et7ou mixte

Country Status (2)

Country Link
EP (1) EP0978483A1 (fr)
DE (1) DE19835458A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011097681A1 (fr) * 2010-02-15 2011-08-18 Biofilta Pty Ltd Module de biorétention, procédé et système de traitement de l'eau
CN106013388A (zh) * 2015-09-19 2016-10-12 王玮 一种水处理系统和水处理方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014015537A1 (de) * 2014-10-21 2016-04-21 Lorenz Eichinger Vorrichtung zur ökologischen Wasseraufbereitung mit einem Hydrozyklon

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2038307A (en) * 1978-11-06 1980-07-23 Xhonneux G Water purification equipment
US4568463A (en) * 1983-02-24 1986-02-04 Klein Samuel H Method and apparatus for the purification of water and other aqueous liquids
DE4323990C1 (de) * 1993-07-17 1995-01-12 Wolfgang Lochmann Regenwasser-Nutzanlage mit einer Filtereinrichtung
EP0634362A1 (fr) * 1993-07-16 1995-01-18 Akitoshi Sugimoto Système de purification de liquides
DE19731887A1 (de) * 1997-07-24 1999-01-28 Gerd Thon Sterilfiltrationsanlage zum Sterilfiltern von Regen- und Brauchwasser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2038307A (en) * 1978-11-06 1980-07-23 Xhonneux G Water purification equipment
US4568463A (en) * 1983-02-24 1986-02-04 Klein Samuel H Method and apparatus for the purification of water and other aqueous liquids
EP0634362A1 (fr) * 1993-07-16 1995-01-18 Akitoshi Sugimoto Système de purification de liquides
DE4323990C1 (de) * 1993-07-17 1995-01-12 Wolfgang Lochmann Regenwasser-Nutzanlage mit einer Filtereinrichtung
DE19731887A1 (de) * 1997-07-24 1999-01-28 Gerd Thon Sterilfiltrationsanlage zum Sterilfiltern von Regen- und Brauchwasser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011097681A1 (fr) * 2010-02-15 2011-08-18 Biofilta Pty Ltd Module de biorétention, procédé et système de traitement de l'eau
CN106013388A (zh) * 2015-09-19 2016-10-12 王玮 一种水处理系统和水处理方法
CN106013388B (zh) * 2015-09-19 2018-03-16 中建伟力建设集团有限公司 市政雨水处理系统

Also Published As

Publication number Publication date
DE19835458A1 (de) 2000-02-17

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